Multiflame heating head



Aug. 15, 1950' C, H'A s 2,518,543

MULTIFLAME HEATING HEAD I Filed Dec. 29, 19451 lNvlziqToR FRANKLIN C.HASSE wig ATTORNEY vide the cylindrical side wall of the chamber FL 1The periphery of the baffle B has a circumferential lip 22 and adjoiningshoulders 23 arranged to interfit gas-tightly with the similarly rah---beted ends of the nozzle flange 2l' and the tubesection l4. A weld Wextends circumferentially of the lip 22 and the joint between the latterand the adjoining ends of the nozzle N and thetube communicatingdirectly with said other chamber.

3. A multi-flame heating head comprising two gas mixing chambers; anozzle having gas discharge ports communicating with one of saidchambers; and a baffle between said chambers having a central gas portextending axially therethrough and other gas ports extendingtherethro'ii'ghan'd inclined relatively to and toward the axis of saidcentral'gas port.

4. A multi-flame heating head comprising two gas mixing chambers; anozzle having gas discharge ports communicating directly with one ofsaid chambers and arranged, at least in part, in rows "concentricallyrelatively to the axis of said nozzle; a baffle between said chambershaving a frusto-conical boss extending into the other igof saidchambers, said baffle having a central gas T, to gas-tightly unite thenozzle N, the baffle B,

and the tube T to one another. Thus, the tube I-' provides a wallenclosing the first gas chamber A,- 'th'e' nozzle-N-provides a wall ofthe second'gas' chamber F, -and-the baffle B providesa wall be' tween"and common to both chambers A and F.

The combustible gas mixture supplied to the chamber A is more thoroughlymixed in the latter,an'cl then is distributed to the ports H and I2 inthe baffle 'B. The gas streams discharging atequal" velocities from theinclined ports I2 will mutual-1y converge or collide with one anotherand with the gas stream of lower velocity discharging 'f'rom the centralport I I, to further mix the gases in the chamber F andto substantiallyuniformly distribute the gas mixture in equal" volume to the inlets ofthe ports 9 in the nozzle N,"fromwhich the gas jets will discharge atsub stahtially'the same relatively low velocity.

" Thus, the construction and arrangement of the chambers A and A, thebaffle B', and'the chain ber F, in' 'conjunction'with the relation andsizes o'f 'the ports in the bafile B and the nozzle N, provide animproved heatin head wherein the flames produced by burning the gas jetsdischarging fromthe ports 9 will collectively serve to uniformly heat alarge surface area of relatively thick metal plate without undue loss ofheat and wastage of gas. I

-'It will be understood that while a preferred form of theimprovedheating head is specifically illustrated and described herein, certainnovel features of the invention may be embodied in other forms ofheating heads without departing from the principles'of the invention asset forth in'the'appended claims.

" What is claimed is:' V

1'. A multi-fiame heating head comprising two gas mixing chambersj anozzle having'gas discharge ports directly communicating with-one ofsaid chambers; and a bafile between said chamhere, said bafile havinggas ports extending therethrough and so inclined relatively to oneanother as to discharge-converging gas streams into the chamber-thatcommunicates directly with said discharge ports, one of the gas ports insaidbaflie extending axially through said bafile and having its outletlarger than its inlet.

2. A multi-flame heating head comprising two gasmixing chambers a bafllebetweensaid chambers; said bafiie having a frusto-com'cal boss extendinginto one of said chambers,and gas ports including an axial portextending through said baflie a'ndthe boss thereof, said gas ports beingso inclined relativelyto one another as-to discharge converging gasstreams into the other.

chamber;,andva.nozzlehaving gas discharge ports provide an annulartrough-shaped chamber perport extending axially through said bafiie andthe boss thereof, and also having gas ports inclined toward theforwardly extended axis of said central-port and extending through saidbaflle and having their entrances in the inclined surface of said boss,the several ports in's'aid baffle being arranged to discharge converginggas streams into the chamber that communicates directly with thedischarge ports of said nozzle.

5.-Arnultiflame heating head comprising a tube having a forwardlyflaring portion and providing a wall of a gas mixing and distributingchamber; a nozzle having concentric rows of parallel gas discharge portsand a flange constituting a. wall of another gas mixing and distributingchamber'comrnunicating directly with said discharge ports; and a bafilebetween said chambe'rs having its periphery secured to said flange andto the forward end of said tube, said bafflecomprising'a frusto-conicalboss extending into said tube and having gas ports including an axialgas port extending through said baffle and the boss thereof,saidlast-named gas ports being so inclined relatively to one another asto discharge converging gas streams from said tube centrally into thechamber that communicates directly withsaid discharge ports.

6. A multi-flame heating head comprising two gas mixing chambers; anozzle having gas discharge ports communicating directly with one ofsaid chambers; and baflle means having connecting port's establishingcommunication be' tween said "chambers; said baffle means includ-' ing arearwardly-tapering boss extending centrally intothe' other of saidchambers and cooperating with a wall of said other chamber to provide atrough-shaped chamber portion adjacent and l p-stream of the inlets ofsaid connecting zle providing a wall of a second gas chamber and havinga,v group of gas discharge ports constituting gas outlets from saidsecond gas chamber into. theatmosphere; and bafile means providing awall between and common tolsuch gas cham bers and having portsconnecting said first chamberto. said second cha nbensaid baffle meansincluding a boss extending rearwardly and axially into said tube andcooperating with said tube to REFERENCES CITED The following referencesare of record in the file of this patent:

Number FOREIGN PATENTS Country Date Great Britain Feb. 7, 1918 GermanyMar. 6, 1936

